## Fighter.gd
## AI-controlled unit that attacks creeps during combat phase.
class_name Fighter
extends CharacterBody2D

var _data: Dictionary = {}
var _target: Node = null
var _attack_cooldown: float = 0.0

func setup(tower_data: Dictionary) -> void:
	_data = tower_data

func _process(delta: float) -> void:
	if GameState.current_phase != GameState.Phase.COMBAT:
		return
	_attack_cooldown -= delta
	_find_target()
	if _target and _attack_cooldown <= 0.0:
		_attack()

func _find_target() -> void:
	if _target and is_instance_valid(_target) and not _target.is_queued_for_deletion():
		return  # keep current target
	# Find nearest creep in range
	var range_px: float = _data.get("range", 150.0) * 32.0  # tiles to pixels
	var nearest: Node = null
	var nearest_dist: float = INF
	for creep in get_tree().get_nodes_in_group("creeps"):
		var d = global_position.distance_to(creep.global_position)
		if d <= range_px and d < nearest_dist:
			nearest = creep
			nearest_dist = d
	_target = nearest

func _attack() -> void:
	if not _target or not is_instance_valid(_target):
		return
	var atk_type = _data.get("attack_type", DamageCalc.AttackType.NORMAL)
	var arm_type = _target.get_armor_type() if _target.has_method("get_armor_type") else DamageCalc.ArmorType.LIGHT
	var damage = DamageCalc.calculate(_data.get("damage", 10), atk_type, arm_type)
	_target.take_damage(damage)
	var speed: float = _data.get("attack_speed", 1.0)
	_attack_cooldown = 1.0 / speed